Stephen Jones confident of Tony Romo form

Dallas Cowboys vice president Stephen Jones has insisted that he has no concerns over the age of quarterback Tony Romo.

The 34-year-old sustained a back injury towards the end of the 2013 campaign that required surgery in the off-season, but Jones is confident that his quarterback's play will remain at a high standard for the near future.

He told reporters: "I know Tony and I know he only gets better with age in terms of what kind of quarterback he's going to be.

"He had one of his best years ever last year. And I expect him to improve upon that."

Dallas face the San Francisco 49ers in their season opener on September 7.